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      1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef WEBKIT_BROWSER_APPCACHE_MOCK_APPCACHE_STORAGE_H_
      6 #define WEBKIT_BROWSER_APPCACHE_MOCK_APPCACHE_STORAGE_H_
      7 
      8 #include <deque>
      9 #include <map>
     10 #include <vector>
     11 
     12 #include "base/callback.h"
     13 #include "base/containers/hash_tables.h"
     14 #include "base/gtest_prod_util.h"
     15 #include "base/memory/scoped_ptr.h"
     16 #include "base/memory/weak_ptr.h"
     17 #include "webkit/browser/appcache/appcache.h"
     18 #include "webkit/browser/appcache/appcache_disk_cache.h"
     19 #include "webkit/browser/appcache/appcache_group.h"
     20 #include "webkit/browser/appcache/appcache_response.h"
     21 #include "webkit/browser/appcache/appcache_storage.h"
     22 
     23 namespace appcache {
     24 
     25 // For use in unit tests.
     26 // Note: This class is also being used to bootstrap our development efforts.
     27 // We can get layout tests up and running, and back fill with real storage
     28 // somewhat in parallel.
     29 class MockAppCacheStorage : public AppCacheStorage {
     30  public:
     31   explicit MockAppCacheStorage(AppCacheService* service);
     32   virtual ~MockAppCacheStorage();
     33 
     34   virtual void GetAllInfo(Delegate* delegate) OVERRIDE;
     35   virtual void LoadCache(int64 id, Delegate* delegate) OVERRIDE;
     36   virtual void LoadOrCreateGroup(const GURL& manifest_url,
     37                                  Delegate* delegate) OVERRIDE;
     38   virtual void StoreGroupAndNewestCache(AppCacheGroup* group,
     39                                         AppCache* newest_cache,
     40                                         Delegate* delegate) OVERRIDE;
     41   virtual void FindResponseForMainRequest(const GURL& url,
     42                                           const GURL& preferred_manifest_url,
     43                                           Delegate* delegate) OVERRIDE;
     44   virtual void FindResponseForSubRequest(
     45       AppCache* cache, const GURL& url,
     46       AppCacheEntry* found_entry, AppCacheEntry* found_fallback_entry,
     47       bool * found_network_namespace) OVERRIDE;
     48   virtual void MarkEntryAsForeign(const GURL& entry_url,
     49                                   int64 cache_id) OVERRIDE;
     50   virtual void MakeGroupObsolete(AppCacheGroup* group,
     51                                  Delegate* delegate) OVERRIDE;
     52   virtual AppCacheResponseReader* CreateResponseReader(
     53       const GURL& manifest_url, int64 group_id, int64 response_id) OVERRIDE;
     54   virtual AppCacheResponseWriter* CreateResponseWriter(
     55       const GURL& manifest_url, int64 group_id) OVERRIDE;
     56   virtual void DoomResponses(
     57       const GURL& manifest_url,
     58       const std::vector<int64>& response_ids) OVERRIDE;
     59   virtual void DeleteResponses(
     60       const GURL& manifest_url,
     61       const std::vector<int64>& response_ids) OVERRIDE;
     62   virtual void PurgeMemory() OVERRIDE {}
     63 
     64  private:
     65   friend class AppCacheRequestHandlerTest;
     66   friend class AppCacheServiceTest;
     67   friend class AppCacheUpdateJobTest;
     68 
     69   typedef base::hash_map<int64, scoped_refptr<AppCache> > StoredCacheMap;
     70   typedef std::map<GURL, scoped_refptr<AppCacheGroup> > StoredGroupMap;
     71   typedef std::set<int64> DoomedResponseIds;
     72 
     73   void ProcessGetAllInfo(scoped_refptr<DelegateReference> delegate_ref);
     74   void ProcessLoadCache(
     75       int64 id, scoped_refptr<DelegateReference> delegate_ref);
     76   void ProcessLoadOrCreateGroup(
     77       const GURL& manifest_url, scoped_refptr<DelegateReference> delegate_ref);
     78   void ProcessStoreGroupAndNewestCache(
     79       scoped_refptr<AppCacheGroup> group, scoped_refptr<AppCache> newest_cache,
     80       scoped_refptr<DelegateReference> delegate_ref);
     81   void ProcessMakeGroupObsolete(
     82       scoped_refptr<AppCacheGroup> group,
     83       scoped_refptr<DelegateReference> delegate_ref);
     84   void ProcessFindResponseForMainRequest(
     85       const GURL& url, scoped_refptr<DelegateReference> delegate_ref);
     86 
     87   void ScheduleTask(const base::Closure& task);
     88   void RunOnePendingTask();
     89 
     90   void AddStoredCache(AppCache* cache);
     91   void RemoveStoredCache(AppCache* cache);
     92   void RemoveStoredCaches(const AppCacheGroup::Caches& caches);
     93   bool IsCacheStored(const AppCache* cache) {
     94     return stored_caches_.find(cache->cache_id()) != stored_caches_.end();
     95   }
     96 
     97   void AddStoredGroup(AppCacheGroup* group);
     98   void RemoveStoredGroup(AppCacheGroup* group);
     99   bool IsGroupStored(const AppCacheGroup* group) {
    100     return IsGroupForManifestStored(group->manifest_url());
    101   }
    102   bool IsGroupForManifestStored(const GURL& manifest_url) {
    103     return stored_groups_.find(manifest_url) != stored_groups_.end();
    104   }
    105 
    106   // These helpers determine when certain operations should complete
    107   // asynchronously vs synchronously to faithfully mimic, or mock,
    108   // the behavior of the real implemenation of the AppCacheStorage
    109   // interface.
    110   bool ShouldGroupLoadAppearAsync(const AppCacheGroup* group);
    111   bool ShouldCacheLoadAppearAsync(const AppCache* cache);
    112 
    113   // Lazily constructed in-memory disk cache.
    114   AppCacheDiskCache* disk_cache() {
    115     if (!disk_cache_) {
    116       const int kMaxCacheSize = 10 * 1024 * 1024;
    117       disk_cache_.reset(new AppCacheDiskCache);
    118       disk_cache_->InitWithMemBackend(kMaxCacheSize, net::CompletionCallback());
    119     }
    120     return disk_cache_.get();
    121   }
    122 
    123   // Simulate failures for testing. Once set all subsequent calls
    124   // to MakeGroupObsolete or StorageGroupAndNewestCache will fail.
    125   void SimulateMakeGroupObsoleteFailure() {
    126     simulate_make_group_obsolete_failure_ = true;
    127   }
    128   void SimulateStoreGroupAndNewestCacheFailure() {
    129     simulate_store_group_and_newest_cache_failure_ = true;
    130   }
    131 
    132   // Simulate FindResponseFor results for testing. These
    133   // provided values will be return on the next call to
    134   // the corresponding Find method, subsequent calls are
    135   // unaffected.
    136   void SimulateFindMainResource(
    137       const AppCacheEntry& entry,
    138       const GURL& fallback_url,
    139       const AppCacheEntry& fallback_entry,
    140       int64 cache_id,
    141       int64 group_id,
    142       const GURL& manifest_url) {
    143     simulate_find_main_resource_ = true;
    144     simulate_find_sub_resource_ = false;
    145     simulated_found_entry_ = entry;
    146     simulated_found_fallback_url_ = fallback_url;
    147     simulated_found_fallback_entry_ = fallback_entry;
    148     simulated_found_cache_id_ = cache_id;
    149     simulated_found_group_id_ = group_id;
    150     simulated_found_manifest_url_ = manifest_url,
    151     simulated_found_network_namespace_ = false;  // N/A to main resource loads
    152   }
    153   void SimulateFindSubResource(
    154       const AppCacheEntry& entry,
    155       const AppCacheEntry& fallback_entry,
    156       bool network_namespace) {
    157     simulate_find_main_resource_ = false;
    158     simulate_find_sub_resource_ = true;
    159     simulated_found_entry_ = entry;
    160     simulated_found_fallback_entry_ = fallback_entry;
    161     simulated_found_cache_id_ = kNoCacheId;  // N/A to sub resource loads
    162     simulated_found_manifest_url_ = GURL();  // N/A to sub resource loads
    163     simulated_found_group_id_ = 0;  // N/A to sub resource loads
    164     simulated_found_network_namespace_ = network_namespace;
    165   }
    166 
    167   void SimulateGetAllInfo(AppCacheInfoCollection* info) {
    168     simulated_appcache_info_ = info;
    169   }
    170 
    171   void SimulateResponseReader(AppCacheResponseReader* reader) {
    172     simulated_reader_.reset(reader);
    173   }
    174 
    175   StoredCacheMap stored_caches_;
    176   StoredGroupMap stored_groups_;
    177   DoomedResponseIds doomed_response_ids_;
    178   scoped_ptr<AppCacheDiskCache> disk_cache_;
    179   std::deque<base::Closure> pending_tasks_;
    180   base::WeakPtrFactory<MockAppCacheStorage> weak_factory_;
    181 
    182   bool simulate_make_group_obsolete_failure_;
    183   bool simulate_store_group_and_newest_cache_failure_;
    184 
    185   bool simulate_find_main_resource_;
    186   bool simulate_find_sub_resource_;
    187   AppCacheEntry simulated_found_entry_;
    188   AppCacheEntry simulated_found_fallback_entry_;
    189   int64 simulated_found_cache_id_;
    190   int64 simulated_found_group_id_;
    191   GURL simulated_found_fallback_url_;
    192   GURL simulated_found_manifest_url_;
    193   bool simulated_found_network_namespace_;
    194   scoped_refptr<AppCacheInfoCollection> simulated_appcache_info_;
    195   scoped_ptr<AppCacheResponseReader> simulated_reader_;
    196 
    197   FRIEND_TEST_ALL_PREFIXES(MockAppCacheStorageTest, BasicFindMainResponse);
    198   FRIEND_TEST_ALL_PREFIXES(MockAppCacheStorageTest,
    199                            BasicFindMainFallbackResponse);
    200   FRIEND_TEST_ALL_PREFIXES(MockAppCacheStorageTest, CreateGroup);
    201   FRIEND_TEST_ALL_PREFIXES(MockAppCacheStorageTest, FindMainResponseExclusions);
    202   FRIEND_TEST_ALL_PREFIXES(MockAppCacheStorageTest,
    203                            FindMainResponseWithMultipleCandidates);
    204   FRIEND_TEST_ALL_PREFIXES(MockAppCacheStorageTest, LoadCache_FarHit);
    205   FRIEND_TEST_ALL_PREFIXES(MockAppCacheStorageTest, LoadGroupAndCache_FarHit);
    206   FRIEND_TEST_ALL_PREFIXES(MockAppCacheStorageTest, MakeGroupObsolete);
    207   FRIEND_TEST_ALL_PREFIXES(MockAppCacheStorageTest, StoreNewGroup);
    208   FRIEND_TEST_ALL_PREFIXES(MockAppCacheStorageTest, StoreExistingGroup);
    209   FRIEND_TEST_ALL_PREFIXES(MockAppCacheStorageTest,
    210                            StoreExistingGroupExistingCache);
    211   FRIEND_TEST_ALL_PREFIXES(AppCacheServiceTest, DeleteAppCachesForOrigin);
    212 
    213   DISALLOW_COPY_AND_ASSIGN(MockAppCacheStorage);
    214 };
    215 
    216 }  // namespace appcache
    217 
    218 #endif  // WEBKIT_BROWSER_APPCACHE_MOCK_APPCACHE_STORAGE_H_
    219